Entropy of Combustion Reactions Q and A

 

Q: What is entropy?

A:The idea of entropy comes from a principle of thermodynamics dealing with energy. It usually refers to the idea that everything in the universe eventually moves from order to disorder, and entropy is the measurement of that change.

 

Q: Does Entropy increase or decrease in a combustion reaction?

A: Because of an incresase in the number of moles of gas it can be assumed that entropy increases

 

Q: What letter represents entropy?

A: Delta S

 

Q: if delta S is positive and delta H is negative for a combustion reaction why doesnt the reaction occur at all temperatures

A: Activation energy

 

Important note:

The change in entropy for the universe is always positive